<div>
    <ng-content select="[aaa]" #aaa></ng-content>
    <div [innerHTML]="aaa"></div>
    <hr />
    <ng-content select="[bbb]" #bbb></ng-content>
    <div [innerHTML]="bbb"></div>
    {{console.log(aaa)}}
    <hr />
    <ng-content></ng-content>
    <template>
        <div>
            this is a template
        </div>
    </template>
</div>